(19)

(11)

EP 3 302 838 A1

(12)

(43) Date of publication: 11.04.2018 Bulletin 2018/15 (21) Application number: 16736229.2 (22) Date of filing: 25.05.2016

(51) International Patent Classification (IPC):  B21C 47/00(2006.01) B21C 47/34(2006.01) B21B 39/08(2006.01) (86) International application number: PCT/IB2016/053057 (87) International publication number: WO 2016/193862 (08.12.2016 Gazette 2016/49)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 29.05.2015 PL 41252315 (71) Applicant: Przedsiebiorstwo Concept Stal B&s Lejman Spólka 22-100 Chelm (PL)	(72) Inventor: LEJMAN, Stanislaw 22-100 Chelm (PL) (74) Representative: Witek, Rafal  WTS Patent Attorneys Witek, Sniezko & Partners ul. Rudolfa Weigla 12 53-114 Wroclaw 53-114 Wroclaw (PL)